Vulnerability in ApostropheCMS File Handling Exposes Sensitive Data Through HTTP Requests
CVE-2026-53607

3.7LOW

Key Information:

Vendor

Apostrophecms

Status
Apostrophe
Vendor
CVE Published:
12 June 2026

What is CVE-2026-53607?

A vulnerability in ApostropheCMS's handling of pretty URLs allows unauthenticated remote attackers to exploit the Host HTTP request header. This issue affects versions of the content management system up to and including 4.30.0, where enabling prettyUrls: true in the @apostrophecms/file module can lead to unauthorized outbound HTTP requests. Although the impact is mitigated by strict path constraints, attackers may still exploit network topology mapping through response behaviors, potentially exposing sensitive information from the private network. As of the latest update, no patches are available for this vulnerability.

Affected Version(s)

apostrophe <= 4.30.0

References

https://github.com/apostrophecms/apostrophe/security/advi...
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CVSS V3.1

Score:
3.7
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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